Am79C90

Storage Temperature . . . . . . . . . . . 65°C to +150°C
Ambient Temperature with
Power Applied . . . . . . . . . . . . . . . . .25°C to +125°C
Supply Voltages to Ground Potential
Continuous . . . . . . . . . . . . . . . . . . .. . . . 0.3 V to +6 V

Stresses above those listed under Absolute Maximum Ratings may cause permanent device failure. Functionality at or above these limits is not implied. Exposure to Absolute Maximum Ratings for extended periods may affect device reliability. Programming conditions may differ.

OPERATING RANGES
Commercial (C) Devices
Temperature (T_A) . . . . . . . . . . . . . . . . 0°C to +70°C
Supply Voltage (V_DD) . . . . . . . . . . +4.75 V to +5.25 V
V_SS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V
Operating ranges define those limits between which the functionality of the device is guaranteed.

The Am79C90 CMOS Local Area Network Controller for Ethernet (C-LANCE) is a 48-pin VLSI device designed to greatly simplify interfacing a microcomputer or minicomputer to an IEEE 802.3/Ethernet Local Area Network. The C-LANCE, in conjunction with the Am7992B Serial Interface Adapter (SIA), Am7996 or Am79C98 and Am79C100 Transceiver, and closely coupled local memory and microprocessor, is intended to provide the user with a complete interface module for an Ethernet network. The Am79C90 is designed using a scalable CMOS technology and is compatible with a variety of microprocessors. On-board DMA, advanced buffer management, and extensive error reporting and diagnostics facilitate design and improve system performance.